 
 
 
10.2.14  Transforming tan(x) into sin(x)/cos(x)
The tan2sincos
command replaces tan(x) by sin(x)/cos(x) in an expression.
- 
tan2sincos takes
expr, an expression containing trigonometric functions.
- tan2sincos(expr) returns
expr with anything of the form tan(x) replaced by 
sin(x)/cos(x).
Example
 
 
